NHTSA Complaint #11575211 — 2015 KIA SEDONA

After driving 3 miles on 2/1, the engine fan ran after the engine was turned off- which never happens. We called Kia for service but nothing was available for 2 weeks; all Kia dealers were similar. No check engine light was illuminated. My husband popped the hood, saw the coolant cap was open and the coolant fluid level in the normal range (slightly above the minimum line). Closing the cap, he test drove the car. Although driving fine, he took the Sedona to a shop where the hood was again popped- the coolant level was showing now above the max fill line, no coolant had been added; as no fluid was seen by the mechanic and since no check engine light was lit, an appointment was made to bring the car back for a full diagnostic. On 2/2/24, after driving 3 miles and making a turn, I thought I saw smoke. But, it was a rainy day so I thought it was condensation from the concrete. After 1 mile, again while slowing to turn, I thought I saw smoke again; I pulled down the window and smelled burning. At this point I was near my home and the check engine light now turned on. Since there was nowhere to safely stop, I proceeded to the front of my home and summoned my husband. He opened the hood and noticed smoke and extreme heat from the engine, but fortunately no fire. After a couple of days, we decided to tow the car to a shop for diagnostics instead of waiting 2 weeks for Kia- we were told the engine had failed. Stunned by the rapidity of these events, we contacted Kia Customer Support and towed the car to our Kia dealer. I have been told the head bolt stripped causing coolant to mix with oil and the engine to fail; the engine itself will cost $8,148 and, and, with ancillary repairs, the total repair will be over $12000. The car has 125k miles and has been fully serviced at Kia over 9 years, lastly 4 months ago which included coolant service. No check engine light was triggered until smoke and extreme heat were emanating from a blown engine, despite progressing degradation.